01 - Set the oven to 400°F. Line a large baking sheet with parchment paper.
02 - Toss the potatoes with olive oil, salt, and pepper in a bowl. Spread them in an even layer on the prepared baking sheet. Roast for 25 to 30 minutes, tossing halfway through, until golden and tender.
03 - While the potatoes roast, rub the chicken breasts with olive oil, smoked paprika, garlic powder, salt, and black pepper until evenly coated.
04 - Heat a grill pan or skillet over medium-high heat. Sear the chicken breasts for 5 to 6 minutes per side until fully cooked, reaching an internal temperature of 165°F. Let rest for 5 minutes, then shred or dice.
05 - In a small saucepan over medium heat, whisk together the BBQ sauce, honey, apple cider vinegar, and Worcestershire sauce. Add the shredded chicken and stir until warmed through, about 2 to 3 minutes.
06 - Transfer the roasted potatoes to a large oven-safe dish. Top with the honey BBQ chicken mixture, then sprinkle evenly with shredded cheddar cheese.
07 - Return the assembled dish to the oven for 5 to 7 minutes, until the cheese is fully melted and lightly bubbling.
08 - Remove from the oven and scatter sliced spring onions and chopped fresh parsley over the top. Serve hot.